Technical Glossary
Immutable Audit Trail
Exact Definition
An Immutable Audit Trail is a security logging pattern that records all system events, database updates, and user accesses in an append-only, tamper-proof table that cannot be altered or deleted by any user or administrator.
Architectural Deep Dive
For regulatory compliance (SOC2, HIPAA, FDA), systems must prove who accessed what data and when. An immutable audit trail prevents unauthorized modifications to these records. We implement this using trigger-based database log tables and WORM (Write Once, Read Many) cloud storage policies, ensuring database administrators cannot edit or purge the activity log history.
The ERPStack Approach
We integrate automated, cryptographic audit trails in our PostgreSQL databases. Every write is verified via trigger pings, providing permanent logs for security auditors.